Modulation and control of a cascade multilevel static synchronous compensator (STATCOM) configuration to improve the quality of voltage generated by wind power systems are presented. The proposed STATCOM configuration needs only four dc-link capacitors and 24 switches to synthesise nine-level operation. In addition to that, switching losses are further reduced by splitting the voltage source inverter of the STATCOM into two units called the ‘bulk inverter’ and the ‘conditioning inverter’. The high-power bulk inverter is operated at low frequency whereas the low-power conditioning inverter is operated at high frequency to suppress harmonics produced by the bulk inverter. Fluctuations at the point of common coupling voltage, caused by sudden wind changes, are suppressed by controlling reactive power of the STATCOM. Simulation and experimental results are presented to verify the efficacy of the proposed modulation and control techniques used in the STATCOM

Item Type:	Refereed Article
Research Division:	Engineering
Research Group:	Electrical and Electronic Engineering
Research Field:	Electrical and Electronic Engineering not elsewhere classified
Objective Division:	Energy
Objective Group:	Renewable Energy
Objective Field:	Wind Energy
Author:	Jayasinghe Arachchillage, SDG (Dr Shantha Jayasinghe Arachchillage)
ID Code:	101318
Year Published:	2011
Web of Science® Times Cited:	10
Deposited By:	Seafaring
Deposited On:	2015-06-17
Last Modified:	2017-11-06
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